Cowen, R. (1996). The Evaluation of higher education systems. Kogan Page.
Lua i Stíl Chicago (17ú heag.)Cowen, Robert. The Evaluation of Higher Education Systems. London: Kogan Page, 1996.
Lua MLA (9ú heag.)Cowen, Robert. The Evaluation of Higher Education Systems. Kogan Page, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.